Throttle mod

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Throttle modifications improve on the stock throttle and brake linkages in various ways to increase available braking power and ensure the carburettor opens fully.


Contents

OFNA Throttle Mod

The ofna throttle mod is a modification using several different OFNA branded parts to create a Savage throttle/brake linkage that has better adjustability, stronger braking, and nicer looks than the stock assembly. The links from Tower follow -

- http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXARF2&P=FR 2 of those for 14$

- http://www3.towerhobbies.com/cgi-bin/WTI0001P?I=LXNXL5&P=8 one of these 3$

- http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXWH32&P=FR and one of these for 3$

Total of $20

Then, you put it all together until it looks like this -

kiz-OFNAmodbig.gif

There's a more detailed tutorial here - http://www.rccoh.com/rc.how-to/savage.ofna.throttle.html

Mr Snuggles' Mod

Details

This mod was pioneered by a Savage Central member Mr Snuggles who realised by removing a small portion of the stock brass collar, some stress could be unloaded from the throttle servo. The mod works by removing the duty of returning the carburettor to closed during idle and braking from the throttle servo, instead relying on a Throttle return spring to perform this action. It also prevents the servo from straining against the carb, attempting to close it although it is already closed. This means that the servo is not loaded by the carburettor during the braking phase and thus can expend all of it's torque soley on braking. This mod requires the use of a throttle return spring.

Modification

The modification is performed by removing 8mm or so of material from the brass collar in the servo horn.

kiz-tm-snuggles.jpg

You can use a file or a dremel tool, but it does help to pivot smoothly and have a vertical stopping point. So to do that you'd use a dremel for the major carving and a file to get it precise.

Links

  • The original forum thread detailing the modification can be found here.
  • A Youtube video of the modification can be found here.
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