Nearly fell off my perch when given the price of the Triumph special tool locking pins for the camshaft backlash gear. Over 40 pounds UK is something of a bad joke. Does anyone here have the dimensions so that I can have an engineer friend make them up?
oz-brit
Bassnote - very nice! Am I looking at the business end of the 'official' Triumph tool in the micrometer?
Bob
Bob
I believe the kit from T also includes a (cheap) 'spanner' in case you disassemble the gear and need to 'wind it up' again during reassembly. You'd also need it should the pin slip or be accidentially removed. So you're getting two pins and a cheap spanner.
However, you normally don't disassemble the gear and the Triumph pins aren't exactly precision instruments. The two gears still manage to twist a tad. Upon reinstalling the cam one uses the pin to lever, the two gears into exact alienment and then put the thing in place and you're done.
My point is anything you fabricate that comes close to the dimensions supplied by Bassnote will do you as fine as the T stuff, which, despite rumours to the contrary, and the price, are not gold plated.
One definate word of caution - any of these tools can be dropped into the engine. I recomment taping a long 'flag' of duct tape onto the tool.
However, you normally don't disassemble the gear and the Triumph pins aren't exactly precision instruments. The two gears still manage to twist a tad. Upon reinstalling the cam one uses the pin to lever, the two gears into exact alienment and then put the thing in place and you're done.
My point is anything you fabricate that comes close to the dimensions supplied by Bassnote will do you as fine as the T stuff, which, despite rumours to the contrary, and the price, are not gold plated.
One definate word of caution - any of these tools can be dropped into the engine. I recomment taping a long 'flag' of duct tape onto the tool.
Yes, it's the official tool. I would have made my own if I had the means to do so.
Merlin is absolutely correct, anything that comes close to the Triumph tool's dimensions should work fine and if you don't disassemble the gear you don't need the spanner.
It should be ridiculously easy to make by anyone with the right equipment. It's just a metal rod with a thinner bit at the end. The thinner bit can be any length, it will just stick out the back of the gear. If I'm remembering correctly, the Triumph tool's end is flush with the back of the gear when inserted. But I don't see any reason why it has to be a particular length other than to save metal.
The primary benefit of the right angle on the tool is to keep it from falling into the engine. I saw somewhere else where someone made a couple of very small pins, which would work fine but might fall somewhere they don't need to be. Functional but risky. Duct tape is a great idea for that.
An enterprising person could make up a batch of these and offer them for half of what Triumph sells them for and still make a profit. They would cost next to nothing to make, although I suppose there isn't a huge demand for Triumph tools.
Good luck all and have a good one.
cam locking pin
My friend made a set for me with his lathe. I brought them home and honed them in a high speed drill press for a very good fit. My final dimensions, for my '05 America were:. 162". &. .234". Very good comments about not dropping them into the engine!!
My friend made a set for me with his lathe. I brought them home and honed them in a high speed drill press for a very good fit. My final dimensions, for my '05 America were:. 162". &. .234". Very good comments about not dropping them into the engine!!
original triumph tool is a bit on loose side ...got pin I bought of ebay which is perfect fit will post picture with sizes
Just made a locking pin for the cam,
Went to the workshop found a 6mm steel bar cut it down to a suitable length about 50mm,
Fitted it to an electric hand drill and clamped the hand drill in the bench vice,
Then started the electric hand drill and locked in the trigger to the on position and used a metal hand file to file the bar end down to 4mm,
Inserted into camshaft hole and removed the camshaft, works like a charm, cost about 15 minutes of my time,
Went to the workshop found a 6mm steel bar cut it down to a suitable length about 50mm,
Fitted it to an electric hand drill and clamped the hand drill in the bench vice,
Then started the electric hand drill and locked in the trigger to the on position and used a metal hand file to file the bar end down to 4mm,
Inserted into camshaft hole and removed the camshaft, works like a charm, cost about 15 minutes of my time,
I used an old drill bit. I got millions. Ground it down roughly with a bench grinder. Not a perfect fit but it worked perfect. Done.
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Old thread but always useful. The tool doesn't need to be precise. Just enough that the smaller half of the gear doesn't slip for a whole tooth. I used small bolt and nut to hold the halves together (attached picture). This method requires to be extremely cautious when inserting the small nut, so you won't drop it in to the engine
Attachments
I had some pins made and they were a little sloppy but all I had to do when I refitted the cams was to pull the pin back so the teeth slotted in nice .
Don't know what you would do though if he gears got unwound
And yes any top end works stuff rags in every gap and treat it like surgery where you count the swabs in and out LOL !
Don't know what you would do though if he gears got unwound
And yes any top end works stuff rags in every gap and treat it like surgery where you count the swabs in and out LOL !
Use a 4mm bolt and a small bit of 6mm steel brake hose. That's what I used.....but Web Cam kept them . I was originally going to take them apart and keep the backlash gears but Web Cam said they were Ok to send complete.
Now I have to re assemble the backlash gears and springs.......and buy more 4mm bolts and 6mm steel tube.
. I was originally going to take them apart and keep the backlash gears but Web Cam said they were Ok to send complete.Now I have to re assemble the backlash gears and springs.......and buy more 4mm bolts and 6mm steel tube.
I used the proper size drill bit and ground it to fit the smaller hole. Made 2 of them.
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