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Makotosun

Carb/throttle cable problem

  • mbutchers
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Carb/throttle cable problem was created by mbutchers

So, I've been rebuilding my bike over the past few months. It seems I have a few anomalies with the original parts, and the latest to rear it's head is the carb (maybe) I've got a new slinky glide throttle cable and it doesn't fir correctly. When installed, the carb slide is being held up off of the stops because the cable isn't long enough. I check the old cable and it had been lashed up. The insert for the carb top is much shorter than the original, but this had been cut away from the original cable. The insertion length is 14mm on the old and 6mm on the new. Obviously I can't install the circlip to hold the cable in. Maybe I've been given the wrong cable? But, I have no reference. Or maybe the carb is incorrect. It has 500 61 stamped on the body. I believe this is correct. Any pointers greatly received. See attached photos.
15 May 2022 08:32 #1

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Replied by JayB on topic Carb/throttle cable problem

500 61 is correct for a USA 1975 DT400, or possibly a 76.  Is that what you have?
15 May 2022 09:01 #2

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Replied by MarkT on topic Carb/throttle cable problem

As JayB pointed out...  only you know what you're working on. 

That carb top looks correct for a DT400.  Cable doesn't. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 May 2022 09:57 #3

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Replied by MarkT on topic Carb/throttle cable problem

That short brass piece would have had a short 45 degree elbow with threads...  original cable would have threaded on to that.  It was a separate part and not part of the cable. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 May 2022 10:04 #4

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Replied by MarkT on topic Carb/throttle cable problem

For a DT400 that is. 
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
15 May 2022 10:05 #5

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Replied by RT325 on topic Carb/throttle cable problem

That's annoying. How much too short is it. I'd be trying to get some length from somewhere without trying to shorten the outer. Can you unscrew the adjuster & pull the cable out with its gliding piece through the bend, then--can you shorten the threaded bit then re-thread the bend tube as close to the bend as you can get. Or find an old adjuster piece to fit up from inside to screw the cable adjuster on up top--screwed up solid to the carb top & then adjust free play at the twist grip. That reads a bit mickey mouse sorry--only 'i' know what i mean lol.
16 May 2022 03:21 #6

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  • mbutchers
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Replied by mbutchers on topic Carb/throttle cable problem

Haha… no, I understood what you meant. I’m pretty resourceful as I work in a resto shop, but was trying to get to the bottom of the problem. If it’s a cable fault, then I shall return it.
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16 May 2022 05:41 #7

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Replied by MarkT on topic Carb/throttle cable problem

Look in the parts list to see the elbow that clips into cap and is not part of the cable.

Then look at HVC Cycle to see cable that threads onto elbow. 

Technically someone could make a cable with an integral elbow like the one you bought...  but it would need to be long enough for the tall cap and the stub that clips into cap would need to be long enough.

It's possible you could get what you have to work by sourcing a short cap and short slide...  I've done that before with parts I had lying around.
1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250
16 May 2022 06:07 #8

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Replied by Ht1kid on topic Carb/throttle cable problem

Hey Mbutchers what kind of resto shop? Autos? I know some of us are into autos too 
16 May 2022 07:09 #9

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Replied by mbutchers on topic Carb/throttle cable problem

Hi Ht1kid.
We do E Types and old school Fords - mainly Mk1 Escorts (Mexico, Twin Cam etc). Lots of other stuff too. Currently have a DB5 and a 70s DBS in for some mods.
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16 May 2022 21:07 #10

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