Month: November 2017 | Moto-Abruzzo

24/11/201728/04/2019

The blip is back!

After a couple of rides, here’s the verdict on the Oxford Adventure heated grips – utterly Fantastic! Not only are they awesome in their toastiness, they really do help my old wrist as well. The extra diameter and better texture compared to the Ariete grips is lovely!

One thing lacking in my riding over the last few months has been blip-ability, the quick tweek of the wrist to grab a few revs … almost every downshift became a novice-style, crunchy-clunky affair, blips either non-existent or late. The head was doing the throttle blippy thing but the wonky wrist just couldn’t or wouldn’t play ball. Fair to say my blip-mojo was lost in sore tendons and swollen joints.

Now with fatter grips I’m chuffed to say my blip-mojo is back with a vengeance, sharp, snappy downshifts complemented with slick as Slick-50 on Teflon clutchless up-shifts as we slice through bend after hairpin bend. If the grin got any wider I’m sure the top of head would have fallen right off. At last, me and the gearbox are best mates again!

But that’s only half of it – These things work superbly as HEATED grips as well! With the days now struggling to reach 10-12C and wearing summer gloves, it takes but a couple of minutes at 100%, then swiftly backing the heat down to 40% before my fingers catch fire! That’s way better than the Aprilia grips ever performed. I do wonder if a big part of the Aprilia grips poor performance was not only down to the high-resistance heaters, but also the feeble wiring to the grips. I swear that stuff is rated to little more than 5 Amps, maybe 8 Amps on a good day with the wind behind it! Either way, they’re history now after a sterling 9 years service and I’m looking forward to seeing how well the Oxford grips last. Bring on a January ride through Switzerland ……. 😯

23/11/201703/05/2019

3D speedo sensor revisited

Yesterday I was asked about the 3D printed speedo sensor case and I couldn’t believe that it’s been almost six months since last mentioning it and about nine months since fitting it. So how is it holding up? Well just fine and dandy thanks for asking!

So far, It’s been through a long 40C summer and some damn cold nights of recent. Heavy rain and a decent shake down over something like 12,000 miles including some off-road, add up to a pretty good trial all-in-all. The plastic is holding up nicely with no signs of cracks, warping or sun-fade, so it looks like the Color-Fabb nGen material is a good choice for use on the Capo and that is backed up by the frame bungs I made last year – all as good as the day they were fitted.

I’ve put a pdf drawing of the main body in the CAD/3D downloads area so you’ve some idea of the dimensions of the speedo sensor. Fitting a sensor from an alternative Aprilia is of course an option, the only real issue being the tight bend in the cable to make it fit, not particularly nice, but functional I guess. Also, is the cable long enough and does it have the right connector? I’ve no idea. Some may want to go with a different sensor altogether, fine in principle as long as it uses the same voltage/current range and the signal is compatible with the dashboard. then of course you have to make it fit, hopefully the drawing will help a little here as it gives depth, diameter and mounting hole location for comparison. Again there is the issue of cable length and connector …….

Just a word of caution though, the standard sensor is a snug fit in the caliper mount and cannot in any way move into the wheel. Can the same be said of an aftermarket sensor and its modified fitment? The consequences of something possibly working loose and jamming the back wheel don’t bear thinking about!

Of course I went for a third option, 3D printing. I’d originally thought of the case as reusable, but in the end, given the few pennies it costs to print I made it a semi-sealed item. The sensor is installed with sealant and after soldering the wires in place, the cap is also back filled with sealant and screwed into place. If and when it fails, I’ll just remove reusable bits (boot, screws etc) and print/assemble another one. Total cost (sensor, case, screws, wire, boot & connector) came in under £30 – Granted about the same as some RSV/SL sensors on ebay …. but that’s new not second-hand!

20/11/201703/05/2019

While the tank was off ……

I finally got around to changing out the open-to-air 4-way connector that feeds the fuel pump and fuel level sensor. In went a nice 4-way Superseal (14A rated) with the connectors crimped, soldered and given a light coat of dielectric grease before sliding home into the waterproof housing.

Hopefully no more erratic fuel level due to oxidation on the pins! While I was at it I pulled the spare fuel pump harness (AP8124664) out of its bag and changed its connector as well. I’d look mighty foolish if I’d pulled that out of my spares kit at the roadside and the connectors didn’t match!

While under the hood, I noticed that the outer coat of the fuel return line (marine-grade ISO 7840 A1) is showing signs of deterioration and kinking near the swaged end at the fuel tank. I’d noticed it back in September, but unfortunately it appears to be a little worse now. Time then to order a new cLCD 170-04 1/4″ barbed quick release connector from Tom Parker (UK) along with suitable Oetiker clamps – I’ll only use clamps that need to be crimped, never ones with screws that can work loose. I’ve no problem doing the return hoses myself, but when it comes to the high pressure side, I leave it to the professionals. Last time that was MF Hydraulics in Oxford and I’ll be happy to use them again come the day.

The marine hose has lasted well (9 years) and that’s to be expected given that hose for marine applications has to meet very strict guidelines, however I think hose rated at SAEJ30R9 with its improved impermeability and tolerance to Ethanol is probably better suited on the Capo nowadays. Either way I wouldn’t lose any sleep over it! The high pressure line and main return line are holding up just fine with no sign of wear or deterioration.

20/11/201703/05/2019

Fitting the Oxford Adventure heated grips

I figured it would be a good time to take the Capo off the road and replace the heated grips when it next rained …… and oh boy is it raining! 48Hrs now and another 24 to go if the met folk are to be believed. Plenty of time then to get the deed done, with a hot brew and cold beer somewhere along the way.

This morning I spent a good hour doing a detailed write-up, only to realise that quite frankly it would bore you to tears …… fitting the Oxford Adventure heated grips is nicely covered in the enclosed instructions and on umpteen websites and no doubt a zillion YouTube video’s. What YOU need is the specific details and issues relevant to fitting them to Rally-Raid biconical handlebars – more specifically, Rally-Raid bars that already have Aprilia heated grips fitted, so here goes.

The left-hand one is a doddle. The Aprilia grip is held on by two screws and no adhesive, so it simple slides off once all the relevent bit’s and bobs have been removed first. The right hand one is a different matter though. For this one I had to cut off the rubber grip, peel off the old heater element and then cut/Dremel the large plastic disk (switch-gear end) and raised ridge (bar-end weight end) to make one continuous 26mm diameter smooth tube.

Now the Oxford Adventure grips are 132mm long (can be cut down to 122mm) and I fitted them untrimmed, but that does mean that spacers are then required for the bar-end weight mounts to fit properly and not foul anything. For the left hand side this is 1.5mm thick (22mm OD, 18mm ID). However the right-hand is a different story. This needs the original Aprilia 3mm spacer replaced with a 7mm one – same OD and ID as the left one. But with this in place, the amount of lost thread on the mounting is now a bit worrying, so I drew up a replacement mounting in CAD and will get a local machine shop to knock a couple up. Meanwhile a 3D printed spacer is in place and works fine for now.

So now they’re on and look good and they feel great, no more finger tips pushing into the back of my palm with summer gloves on and I swear my wrist is already thanking me for the reduced torque on the throttle. All that’s left to do now is install the controller and wire everything up ….. just follow the instructions in the box!

Why not just cut the grips down I hear you cry. Well to me, cut down grips look just that – cut down. They lose the raised ridge at the end and scream out butchered! Besides it’s bloody hard to get a perfect cut, it always seems to go wibbly-wobbly somewhere. Not only that, but I wanted the extra width to make using winter gloves more comfortable. The original grips (and Ariete) are just too narrow (107mm usable) to be comfortable with my BKS winter gloves, leaving Mr Pinky out on his lonesome on the bar-end weight! Now the whole finger-family can be snug and warm on the extra width the Oxford grips give.

UPDATE – The whole kit is now in and working a treat, and boy are they toasty compared to the Aprilia ones! If I have one issue with them, it’s the length of the wires ….. I found that the wiring provided isn’t exactly generous and needed very careful routing to make sure the three connectors could sit comfortably behind the headlight and the main loom then reach back to the battery. Given that they are sold as ‘Adventure’ grips, am I cynical for thinking they might be aimed at adventure style bikes with higher/wider handlebars etc? Come on Oxford, a few extra inches of cable on the looms won’t break the bank surely!

02/11/201703/05/2019

No1 component that fails on a dashboard…..

Yes, today I’m dishing the dirt on the number one bad-boy component on the Caponord and Futura dashboard. Or more to the point, why this sad little part earns this unwanted reputation! What is it? Well it’s a rather innocuous SMD radial electrolytic capacitor rated at 16V 47µF.

Over the past couple of years, I’d say that 70% of contacts via the website have involved this component in one way or another …. and that percentage is steadily increasing! Why? Simply because of the constant and unstoppable tick-tock passage of time. Unlike most electronic components, electrolytic capacitors have a given life span based firmly on operating temperature and duration. What does it do? In a nutshell, it smooths out the 5V DC power rail … without it the rail contains a nasty AC component and that really upsets the microcontroller!

First I want to look at the symptoms this little guy causes when it begins to shuffle off to the electronic afterlife:

Dashboard dead except for Oil, Neutral and Side-Stand LED’s – Especially when cold.
After sitting in the sun or being heated during a ride-out, it may spring into life, or flicker on and off rapidly. This is the clincher!

Of course, to be 100% sure, we have to get down to the circuit board and identify the component first:

So there it is, just to the left of the voltage regulator chip. Now I’m sure the eagle-eyed amongst you will have noticed that there is a similar (in fact identical) component to the right of the regulator …… why is only the one on the left a problem then?

Well the dashboard has two regulators in the one package, supplying two independent 5V power rails. One is powered permanently from the minute a battery is installed in the bike, the other only operates when the ignition is switched on. And there lies the answer to the question …… lets punch in some numbers. For the sake of argument, we’ve got a Capo that has done 5,000 miles in a year and averaged 50mph.

5,000 miles / 50mph = 100 operating hours for the right hand (switched) capacitor.
365 days * 24hrs a day = 8,760 operating hours for the left hand (permanent) capacitor.
Now lets assume 10 years have passed …. now we have 1,000 / 87,600 operating hours respectively!

And there is the bottom line. After 10 – 16 years on the bike, the left hand capacitor is simply reaching the end of its working life long before its companion on the other power rail, and with each passing year more are failing …. It’s not a case of ‘if’ folks, it’s a simple matter of when!

Replacement is straight forward and has been done by quite a few owners over the years, but like most things, it requires a certain level of skill and experience along with the right tools for the job ….. without these, there is a very real possibility of damaging the tracks or adjacent components and making the board worse than when you started. You have been warned!