[Fot] Brake and Clutch to the floor.
Tony Drews
tony at tonydrews.com
Wed Dec 25 22:38:51 MST 2019
Another two feet in video - skip to about 2:45. This has nothing to do
with the original Overdrive question, but shows how hard braking keeps
the car from going in unpredictable directions... Took me a mental
second to realize I wasn't going to catch this one, seems like much less
than a second watching the video.
https://www.youtube.com/watch?v=SFQUYNxwIMI
Cheers, Tony
On 12/25/2019 7:57 PM, marty via Fot wrote:
> If you go to the 6:47 point in this video you can see John showing off
> the brake and clutch to the floor technique. 🙂
>
> https://youtu.be/uyZNmn-5SpA
>
>
> Marty
>
> ------------------------------------------------------------------------
> *From:* Fot <fot-bounces at autox.team.net> on behalf of John H. Hasty
> via Fot <fot at autox.team.net>
> *Sent:* Tuesday, December 24, 2019 2:18 PM
> *To:* David Gott <triumphsix at yahoo.com>
> *Cc:* FOT List <fot at autox.team.net>; Glenn Franco <brakey6666 at gmail.com>
> *Subject:* Re: [Fot] A-Type Overdrive Testing
> Yep...brake & clutch to the floor... also can be wired to disengage
> ... ask Steve Yott...
>
> Sent from my iPhone
>
>> On Dec 24, 2019, at 1:50 PM, David Gott via Fot <fot at autox.team.net>
>> wrote:
>>
>> Speaking of spinning the OD backwards, which it won’t do, what
>> happens if you spin the car while overdrive is engaged? Probably my
>> biggest concern for running one of these in a race car... I was
>> thinking I’d use it on track and maybe autocross, but I think that is
>> ill advised now that I bring up that question. Has anyone ever spun
>> and rolled backwards, with OD engaged?
>>
>> Dave G
>>
>>
>> Sent from Yahoo Mail for iPhone
>> <https://overview.mail.yahoo.com/?.src=iOS>
>>
>> On Tuesday, December 24, 2019, 12:47 PM, Greg Blake
>> <gblake58tr3 at icloud.com> wrote:
>>
>> If this is for a race car, you might consider shiming the
>> accumulator spring to get closer to 500psi.
>>
>> Sent from my iPhone
>>
>>> On Dec 24, 2019, at 10:51 AM, David Gott via Fot
>>> <fot at autox.team.net> wrote:
>>>
>>> I was able to test my overdrive by chucking a 1/2” electric
>>> drill on the input shaft and turning the whole transmission.
>>> (Make sure to spin the right direction!). Pretty sure I used
>>> 4th gear. I was able to determine that my OD pressure is at
>>> 350 psi, so I’ll have to shim the spring I guess.
>>>
>>> Secondary question; the OD seemed to stick on me, but I did not
>>> have a load on the output flange, due to being on the bench; I’m
>>> assuming this might be an issue? Or would a load coax the OD to
>>> releasing as appropriate?
>>>
>>> Hopefully I don’t hijack your thread too much!
>>>
>>> Thanks,
>>> Dave Gott
>>> 62 TR4 (“A” type on the bench)
>>>
>>> Sent from Yahoo Mail for iPhone
>>> <https://overview.mail.yahoo.com/?.src=iOS>
>>>
>>> On Tuesday, December 24, 2019, 11:25 AM, Jack Wheeler via Fot
>>> <fot at autox.team.net> wrote:
>>>
>>> I have tested overdrives like this for years. My drive motor
>>> only spins in one direction, which makes sure the output
>>> shaft only spins in the same direction the shaft would be
>>> spinning when the car is driven in a forward speed.
>>> Therefore, I don't know what would happen if you spun it in
>>> the wrong direction.
>>>
>>> Jack
>>>
>>> On Monday, December 23, 2019, 10:05:53 PM EST, Glenn Franco
>>> via Fot <fot at autox.team.net> wrote:
>>>
>>>
>>> Merry Christmas
>>> Quick Question
>>> A friend of mine started testing his A-Type Overdrives by
>>> back spinning the output flange (to the prop shaft) with a
>>> pulley and electric motor.
>>> I've seen this done by spinning the transmission INPUT shaft
>>> with a pulley and electric motor but not from the rear.
>>> Any chance of damaging the overdrive since the overrunning
>>> clutch is only going to spin in the one direction, can it
>>> lock up the overdrive?
>>> Thanks in advance
>>> Glenn
>>>
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