Sticky throttle is going to drive me to drink....

Hoosier Tom · Post by **Hoosier Tom** » Tue Feb 07, 2017 3:41 pm

The early Dreams used the throttle housing and throttle pipe like the CB77, then went to the internal spiral throttle design. You will need the early cable if using the throttle housing/pipe of a CB77 or early Dream. Part number is 17910-262-000. There are currently a few on eBay. If you use short bars it may be a bit long, but you'll figure it out.

Here is a link to the parts schematic http://images.cmsnl.com/img/partslists/ ... 2_6e3e.gif

HT

danielzink · Post by **danielzink** » Tue Feb 07, 2017 6:48 pm

Hoosier Tom wrote:The early Dreams used the throttle housing and throttle pipe like the CB77, then went to the internal spiral throttle design. You will need the early cable if using the throttle housing/pipe of a CB77 or early Dream. Part number is 17910-262-000. There are currently a few on eBay. If you use short bars it may be a bit long, but you'll figure it out.

Here is a link to the parts schematic http://images.cmsnl.com/img/partslists/ ... 2_6e3e.gif

HT

Wonderful info !

Thank you so much !

Dan

Hoosier Tom · Post by **Hoosier Tom** » Tue Feb 07, 2017 11:21 pm

danielzink wrote:
Hoosier Tom wrote:The early Dreams used the throttle housing and throttle pipe like the CB77, then went to the internal spiral throttle design. You will need the early cable if using the throttle housing/pipe of a CB77 or early Dream. Part number is 17910-262-000. There are currently a few on eBay. If you use short bars it may be a bit long, but you'll figure it out.

Here is a link to the parts schematic http://images.cmsnl.com/img/partslists/ ... 2_6e3e.gif

HT
Wonderful info !

Thank you so much !

Dan

You're welcome. Happy to help.

HT

OldHarley · Post by **OldHarley** » Thu Apr 13, 2017 1:53 pm

Hoosier Tom wrote:The early Dreams used the throttle housing and throttle pipe like the CB77, then went to the internal spiral throttle design. You will need the early cable if using the throttle housing/pipe of a CB77 or early Dream. Part number is 17910-262-000. There are currently a few on eBay. If you use short bars it may be a bit long, but you'll figure it out.
HT

HT, my parts book also lists a 17910-257-010 alongside with your ref#. Any idea the length of this one? I have the -262-000 and it would be nice if it was 1- 2" shorter.

Hoosier Tom · Post by **Hoosier Tom** » Sat Apr 15, 2017 9:47 pm

OldHarley wrote:HT, my parts book also lists a 17910-257-010 alongside with your ref#. Any idea the length of this one? I have the -262-000 and it would be nice if it was 1- 2" shorter.

I have no idea if it will be shorter. I've never had a "257" cable in my hand. The 257 model code was for the CE71 250 Dream Sport that was available 1959-1960. The 262 model code is for the CA72 250 Dream 1960-1963. Since I don't have handlebars or cables to compare I don't know if the 257 cable is shorter. If one part number supercedes to the other number, ideally, the parts are interchangeable and should be the same length, but again, I can't say definitively.

HT

OldHarley · Post by **OldHarley** » Mon Apr 24, 2017 8:32 am

Hoosier Tom,

Thanks for the info.

BTW, I am convinced many Dream sticky twist throttle issues are aggravated by an inherent design problem - that is, the adjuster being located mid-cable.

When properly adjusted out, the two separate OUTER sheathes have a (1/2" to 1") gap at the adjuster. This allows that unsupported length of inner cable to BEND slightly at the adjuster - that combined with the forced "push" that happens to cable with the twist throttle grip design itself causes a bind point that is seen as slow or sticky throttle.

BTW, using a CB72 external throttle with the above referenced -262-000 cable fixed the problem - the throttle now snaps back.

There is still a very slight acceleration drag when cruising that is only noticeable when trying to make small throttle adjustments...I'm guessing this can be cleared up by lubing the new cable.