Topic: Stumped

[Freaky1]

I am going to use a single pull throttle and wanted to come up with some type of twist clutch to match. I thought about using an internal twist but also thought about using a setup that matches the throttle. Basically just buy two throttle setups and put one on one side for the throttle and one on the other side for the clutch. I know the cable is heavier and the ball end is bigger on the clutch cable and the stock end fitting wouldn't work in the housing. I was planning on having a cable made anyway as the stock one is also too long. Does it sound like I should continue to talk myself out of this idea or does anyone have some advice?

[Hush]

Are you handicapped in some way that you need this sort of device?
If so go for it and good luck.
If not WTF?

[Freaky1]

Not handicapped yet. You can buy an internial clutch where the cable goes inside and you have a very smooth look outside. Was just trying to do something my own way with my own look. Never having to reach for the clutch lever means never having anything less than total control, just twist don't reach.

[Freaky1]

Aside from the obvious (ebay and the like) any suggestions on where to find one? Or possibly even make one?

[Freaky1]

If I could even get pics of the internal setup I think I could make one. Hate to have someone coming after me for using a vintage piece on a somewhat modern bike

[gregk]

Freaky1

My indian ( 38) has internal throttle and spark advance cables.  Look at Kiwi's web site and they will have some pictures of the handle bar spirals and the associated cables and ends.  Not that complicated. 

Greg

[Freaky1]

Thanks Greg,
I didn't think it was very complicated but I was having a hard time finding anything but advertisements and they don't want you to make one just buy one of theirs. Thanks again

[andy750]

The Vespa scooters (pre-1970) had internal cables. Might want to look at them as well for ideas.

good luck
Andy

[754]

Chooper places make internal throttle and clutch parts or ends to weld to your bars, be easier if you use 1 inch bars.

 Old H-D,s (and others) used hard wire, not cable, allowing it to push & pull.

 I can probably tell you how to make them, but you will need a lot of patience and be able to do careful hand fitting and filing..

 Also plan your exit points, usually they had a pierced dimple on a curved part of the bars for cable exit (in the old days), or you will have to run right thru most of the bar.

[Freaky1]

I would love it Old Timer if you guided me through this. I have several things I'm looking to do to the bike and I am in no rush, other than having it ready next summer. F.Y.I. the bike in question is a '77 CB750F and I'd like to use this set up for the throttle and clutch.

[Freaky1]

Also it would give me an excuse for the wife to possibly buy some more tools!!

[754]

First you have to look at an exploded view of the internal controls.

 & you have to understand that the clutch takes considerable force, much more than throttle side.

I am not near computer much during the week, very briefly early aM and the late evening..

You may need a few bits machined, but I can walk you thru making the spirals, the most costly part.., it may be easier to make up the ends then weld to the bars or setscrew..

[Freaky1]

any suggestions on where to find a good exploded view, I have looked and come up empty.

I am all ears, would it be best to do this with 1" drag bars, the set I have are 7/8".

I can make these things up and then I weld them on the ends, correct.

I don't have much time in front of the computer eather, about the same times as you though.

I'm pretty sure I don't have the picecs I'll need on hand so if you want to start with a parts list, so to speak.

[mystic_1]

I Googled for ("internal clutch" handlebar) and this was on the first link in the results:





Internal clutch setups are similar to internal throttles.  So, these may help you visualize the action:

Internal Throttle Install

Installing An Internal Throttle






Further Google-Fu also indicates that early CT70's and Z50 minibikes used internal throttles, you might get some inspiration by checking out these:

http://www.cmsnl.com/honda-ct70-trail-70-k0-us_model611/partslist/F++01.html
http://www.cmsnl.com/honda-z50a-mini-trail-1976-us_model887/partslist/F++01.html


cheers
mystic_1

[Old Scrambler]

The early '60s HONDA CA95 and C77, C71, C72, CA72 and CA77 models all have internal throttles that could be used on the clutch side with stock bars.  You would neet to cut the slot in the bar and then provide the exist hole. Graphite, white grease, and perfect adjustment will be required for ease of use.  Good Luck, Dennis in Wisconsin

[Freaky1]

I've been digging around the internet and I think I might just buy a set, for the price it might just be the way to go. There are the first ones that I saw which were insanely expensive and today I have found some that are not all pretty and are much more reasonable in price. I'd love the challenge of making some but that would be easier if I had some in my hand already. There will be other projects and if I have a set in my hand I know I can make copies. Although I haven't decided if I want to go with the internal setup or just switch around a regular twist throttle and have the cable exposed. I'll keep my eyes open for some old Hondas to pick up with them if I see them, thanks everyone.

[754]

The old Honda ones are probably too thin and light..

 Throttle is easy..
Clutch is way, way harder to work out, a lot of force involved

[Freaky1]

Yea and my clutch feels a bit stiff anyway, got a new cable and it's a little better but it will take some getting used to.