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john.b.watts
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VBMWMO #8877
Joined: 03/09/2015
Posts: 38

My throttle grip lacks the "curl spring" and only has the rivet hole where the factory riveted the item in. If you have this device in your throttle grip would you comment on its usefulness? Is this something of advantage for riding and tuning? (See item at this picture, with thanks to Duane Ausherman: http://w6rec.com/duane/bmw/control/control17.jpg.)

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6325
This was missing when I first

This was missing when I first got my R69S. I could never relax my throttle hand while riding...the tension would easily bring the throttle to idle...not good when going 60 mph. I'd have to reach over with my left hand to hold the throttle while I uncramped my fingers. It was not a good situation.

I was able to buy a good quality used throttle grip with the spring. It's night and day! The grip stays where I put it...a bit of a cruise control for short periods. It's helped tremendously when starting. Ideally, I would open the throttle part way with my left hand while I kicked. With the new grip, I can set the throttle where I want it and use my left hand to hold the handlebars while I kick.

I'd never go back. Of course, YMMV.

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Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

john.b.watts
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VBMWMO #8877
Joined: 03/09/2015
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Does anyone have one to sell?

If I can swing it, I'd like to try a "proper" throttle - if you have one to spare with solid teeth (sounds like I am buying a horse!) please give me a shout.

miller6997
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VBMWMO #6997
Joined: 10/27/2006
Posts: 933
Unobtanium

For my R69S I've been on alert for a throttle with spring intact for years. I've never been able to find one. New ones are unavailable and the used ones that show up invariably have the spring missing. Some time ago, I switched to /5 throttle and clutch perches and I use the knurled knob on the throttle side to hold the throttle open. It's cumbersome, but better than nothing.

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Jon Miller
'67 R69S
'13 F800GT

The Plunger
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VBMWMO #8356
Joined: 09/03/2012
Posts: 174
You could back date to a

You could back date to a plunger throttle, no spring to pop off there. At first, I thought I had a sticky throttle and didn't realize it's supposed to!

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Brian
'52 R67/2, '53 R51/3

Jim D 5112
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VBMWMO #5112
Joined: 10/27/2006
Posts: 92
The Spring

Just find a piece of blued tempered polished spring steel. Grind it to the proper width and cut it to length , shape it and rivet it on. You can find it in Mcmaster Carr or just get a old points feeler set and use one that is the proper thickness.

Daves79x
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VBMWMO #9030
Joined: 08/09/2015
Posts: 250
Guess I'm Lucky

I wasn't sure whether I'd like the spring throttle either, but it is fantastic. Great for starting and warm-up. I'm lucky in that all three of my bikes have the spring.

Dave

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Dave

john.b.watts
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VBMWMO #8877
Joined: 03/09/2015
Posts: 38
What thickness for this?

I have a box full of spring steel feelers and that is a great idea! What thickness do you think - .012 or so, or something thicker?

Also, so I understand, the drag is almost enough to dead the throttle to a slow crawl back by itself?

skychs
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VBMWMO #9221
Joined: 11/25/2016
Posts: 199
throttle lock

I use a very simple "throttle lock" on most of my bikes. Its easy to install and can be transferred from one bike to another in a matter of seconds. Here is a photo of one on my R60/2. Works great.

Amazon has them. Cheap. They come in various sizes for different size handlebars.

https://www.amazon.com/Go-Cruise-Motorcycle-Throttle-Control/dp/B00TIEAT...

  • img_8098.jpg
Jim D 5112
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VBMWMO #5112
Joined: 10/27/2006
Posts: 92
Throttle Drag

I would think they are thicker than .012 maybe in the .015 - .020 range. Been awhile since I had mine apart. I have 2 but they are on bikes and one has bar end lights. Maybe someone on here has one off that they could measure for thickness and width. It would be easy to fab.
I think the rivet is a 3/32. you will need to thin the head of the rivet. I had to replace the rivet on one of mine. I think the width was around 1/4 - 3/8 inch. But these are just from my memory of probably 4 or 5 years ago. Lets hope someone has one off to measure and responds.

john.b.watts
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VBMWMO #8877
Joined: 03/09/2015
Posts: 38
I used .025

I used a .025 spring steel feeler, which fits perfectly against the slight rise section it abuts against. The rivet was driven in, then tool removed and rivet reversed so that the head was inside, the crush section outside against which I laid an upholstery hammer to spread it across the surface. Then, a half round smooth cut file to blend the rivet head to the curve of the handlebar. An okay job, and with a bit of grease provides resistance but I still would love an original to match its action against.

Also wondered about other solutions to adding resistance:

= a tight rubber O ring laid into the shallow end area prior to putting the grip on
= Move assembly towards center of handlebar, then lay a bead of silicone around the handlebar, then slide throttle grip over it

In all events, I will look over my work with an eye to making sure if it snaps inside I do not find the throttle stuck in place.

Jim D 5112
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VBMWMO #5112
Joined: 10/27/2006
Posts: 92
Throttle Drag

I have bent the originals to suit my preference for drag. I would think that you would have a much greater chance of a problem with the rubber or the silicone balling up or shredding. All of my bikes have a throttle drag on them. And it drives anyone else nuts who is not used to turning the throttle back. Not that many others ride my bikes. But when I purchased a new bike and brought it in for warranty checks etc. the techs didn't care for it at all.

kfelt
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ma
Joined: 11/02/2017
Posts: 3
I have old bar end mirrors on

I have old bar end mirrors on my R69, the type that gets inserted into the bar and expanded by tightening the bolt on the end. I inserted a washer the same diameter as the end of the rubber grip between the grip and the mirror mount and just tapped the end of the bolt to create a slight drag on throttle. Been working great for years.

Anyone who has ridden older Harley Davidsons with their ingenious internal wire throttle control system can appreciate how nice is is to just turn the throttle back and forth.

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