Triumphrat

Ultrasummer

First the basics. 1970 Triumph Bonneville. While putting on new handlebars and new throttle cables, I've found that this can be a little tricky. It's like I need 3 hands. Is there a simple trick to do this? Should I start with the throttle itself, route the cables, and finally attaching to carbs? Or is it better to start at the carbs, route the cables, and then struggle trying to get them into the throttle (grip). Either way it seems like a bit of a pain in the ass. Just was wondering if anyone had any neat tricks. By the way, new handlebars and throttle cable are all right out of the parts book and ordered through British Only for my year and make. I'm confident it's all the right stuff...just looking for some helpful wisdom of the experts.

Morris the Cat

If you think about it youwill see the wisdom of starting at the carb's and working your way up to the throttle grip.

Starting at the carbs- you would want just a bit of slack so that if a cable broke- you'd still maintain at least an idle condition.

Found out the hard way while setting up Mikuni's from scratch.

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Morris of Main Street

Ultrasummer

Interesting food for thought. But the bike is in my garage while I work on it and not out on the road (If I'm understanding your reasoning). If the cable broke I'd order another and start over. Regardless, so far that's the method I've been trying. I only messed with it for about an hour before calling it quits for the day. I'll figure it out. I appreciate your input

BirdoPrey

What I have found works best for me is to start at the carbs, route the cables (trying to keep to a minimum the bends and kinks), and then mount the grip leaving the little split ferrules until last. Once I have everything in place I just pull down on the cable outer housing and slip the ferrule in place. From there it's on to adjusting.

If I have to work on any of it, I just pull down on the cable and remove the ferrule to get some slack. This doesn't require changing the adjusters but of course you should always check and readjust if necessary.

Art.

DAVE M

on my 79 with built in switch gear, single to double adapter and Mk2 carbs, I start at the top and work down

JohnA

That's what I've always done (Mk I concentrics &/or DellOrtos). Not because I've thought anything wrong with doing the other way round, simply because it's never even occurred to me to do it starting at the carbs and working up to the twistgrip! I've never had any problems, as long as all the adjustment is slackened right off first.

triumpt120rv

Not sure if you have seen Plewsey's vids but they may help. Here is part 5 & 6. (Happy New Year & thanks Plewsey )

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Morris the Cat

Install any way you want but adjusting cables starts from the carb's!
By this time that probably has become self-evident. . .
. . . you need all the slack available to fit the carb end side into the throttle slide and through the compressed spring.

Throttle slides set to an even idle first (stop screws), then allow a slight bit of slack before the cable lifts it up- both sides of course.

This is one area where the Mikuni carb differs from an Amal, there is an adjustment right on top of the carb to take out the slack for idle.

The 'Trick' is to have maximun slack in the upper twistgrip cable while setting up all new lower cables.

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Morris of Main Street

Ultrasummer

Thanks Triumpht120rv. Thought I'd seen all of Plewsy's video's but guess not. Those two were very helpful. Now if I could only come up with one of his little home made pieces that hold a compressed spring like in video #5. I also like the idea of twisting the spring into place. Very helpful info. Thanks again.