Search: Posts Made By: bob27s
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02-03-2016, 11:08 AM
Replies: 6
Views: 2,521
Posted By bob27s

Wow.. apologies, I totally missed this post in...

Wow.. apologies, I totally missed this post in here! Looks like it was moved in.

You got some good information.

In general, the performance of the Sport Jett side exhaust engines and the...
02-03-2016, 11:02 AM
Replies: 11
Views: 4,269
Posted By bob27s

Greetings all -- Just to clarify for everyone --...

Greetings all -- Just to clarify for everyone -- the transition was completed over the Christmas holiday time.

New website address is DUBJETT.COM -- the business address and phone number...
02-03-2016, 10:59 AM
Replies: 3
Views: 1,689
Posted By bob27s

Just to provide a proper update -- the new...

Just to provide a proper update -- the new website DUBJETT.COM is live now. Jett Aerotech continues to have the same phone number, same business and shipping address --

For email, please...
12-28-2015, 07:33 PM
Replies: 16
Views: 2,595
Posted By bob27s

Yep... Web stuff is about done. Should turn it...

Yep... Web stuff is about done. Should turn it live this week.

My apologies for delay.

If something needed... email to jettengr@sbcglobal.net and we can get what you need

Bob
12-06-2015, 05:00 PM
Replies: 11
Views: 4,269
Posted By bob27s

tomorrow if i can get the friggin thing loaded :)...

tomorrow if i can get the friggin thing loaded :)

i am about a month late now
11-03-2015, 10:17 AM
Replies: 11
Views: 4,269
Posted By bob27s

nothing critical. Some business re-alignment. ...

nothing critical. Some business re-alignment. No longer identified as an engineering company.
10-30-2015, 10:44 AM
Replies: 3
Views: 1,689
Posted By bob27s

Exclamation JETT - change in the business -- please read

Hi folks......

I posted something in the Jett forum on this, but since I sorta "lived" here in this Extreme Speed forum for years, I wanted to make this announcement here as well.

The JETT...
10-30-2015, 10:24 AM
Replies: 11
Views: 4,269
Posted By bob27s

Exclamation Jett business is changing October 30th, 2015 -- please read --

Greetings all...

After many years Jett Engineering, Inc is discontinuing operations, and the jettengineering.com web site has been taken off line.

But fear not !

A new business name and a...
10-30-2015, 10:13 AM
Replies: 2
Views: 1,752
Posted By bob27s

Mac's can provide you the correct header and bolt...

Mac's can provide you the correct header and bolt pattern. Usually use the O-ring header, which should match the OS fan engine
10-30-2015, 09:59 AM
Replies: 5
Views: 1,470
Posted By bob27s

Hi ... Thanks for writing, and sorry for the...

Hi ... Thanks for writing, and sorry for the delay replying...

You have to ask yourself -- "What changed". If it is breaking the front bolt, it is shaking

Usually if it is breaking the rear...
08-03-2015, 04:35 AM
Replies: 1,387
Views: 261,882
Posted By bob27s

Just adding to the view count :)

Just adding to the view count :)
05-14-2015, 10:08 AM
Replies: 5
Views: 1,470
Posted By bob27s

Hi, and again all.. sorry for the delays.. ...

Hi, and again all.. sorry for the delays..

The Ro-Jett markings were from the crank case manufacture phase. If you have the RC carb, it is a regular BSE .25 engine :) Dub makes the parts...
05-14-2015, 09:59 AM
Replies: 1
Views: 1,101
Posted By bob27s

Hi Ed, Sorry for the delay... I had not...

Hi Ed,

Sorry for the delay... I had not checked in here in a few days :)

Hard to post a quote here on parts. And depends on if the crank is salvageable.
Best choice -- send the engine...
03-12-2015, 08:20 AM
Replies: 48
Views: 2,269
Posted By bob27s

True, but you would not want to use the LX...

True, but you would not want to use the LX versions for turning larger props -- sleeve timing is for RPM. The standard timing tends to work better.

Good luck to all of the teams competing...
03-11-2015, 07:52 AM
Replies: 48
Views: 2,269
Posted By bob27s

I just happened to run across this... i guess the...

I just happened to run across this... i guess the thread is a few weeks old. Hopefully I can assist...

You can run the 30% fuel without any issue .... but I suggest using the heli fuel with...
03-11-2015, 07:34 AM
Replies: 633
Views: 31,497
Posted By bob27s

... on purpose :)

... on purpose :)
03-11-2015, 07:21 AM
Replies: 176
Views: 21,257
Posted By bob27s

Lots of things happen when you want to gain...

Lots of things happen when you want to gain speed. Drag goes up with the square of the speed. So works out that you require a large increase in engine power (thrust) to achieve a relatively small...
03-11-2015, 07:18 AM
Replies: 1
Views: 1,206
Posted By bob27s

hey there... sorry for the LONG delay on this... ...

hey there... sorry for the LONG delay on this... I had not been getting any notifications on the forum here.

Yes, somewhere around 14,000 to 15,500 is good for the turbojett as a peak rpm. ...
09-21-2014, 12:35 PM
Replies: 2
Views: 1,222
Posted By bob27s

Hi Jim .. sorry for delayed reply. .61 big...

Hi Jim .. sorry for delayed reply.

.61 big block engine is rare. Were custom built. But it uses the same jettstream muffler as the .90L.

Rpm range and target is the same as .76 big block. ...
09-21-2014, 12:26 PM
Replies: 18
Views: 3,103
Posted By bob27s

Hi... Im pretty sure the website has...

Hi...

Im pretty sure the website has something between 17-18000 for rpm target. The muffler is optimized for that range. But yes some folks ran it at higher rpm on occasion.

If you had it...
08-15-2014, 11:17 AM
Replies: 0
Views: 407
Posted By bob27s

Kelly up on marketplace

I put my Kyosho kelly racer F1 up on market place.
There were a couple of threads on this a while back.

I built one, this was the backup- still new in box.

Good flying plane. The 2C...
08-14-2014, 12:35 PM
Replies: 16
Views: 2,595
Posted By bob27s

before i offer them up in general, I have an...

before i offer them up in general, I have an SS40 (caps version) and retired 428 BSE engine that will be for sale shortly. Initial interest, contact me please
07-28-2014, 04:16 PM
Replies: 3
Views: 941
Posted By bob27s

Thanks...!

Thanks...!
07-25-2014, 07:53 AM
Replies: 16
Views: 2,595
Posted By bob27s

Hi Friends.. Sorry I have not been around...

Hi Friends..

Sorry I have not been around here for a while ... job had me prioritized mostly. And I was not getting my email notifications from here.

Yes, we had a fun time with the...
07-25-2014, 06:14 AM
Replies: 3
Views: 941
Posted By bob27s

Apologies -- back in the loop here

Hi folks..
My apologies...... work (full time job) had my full attention for a while .... so I am sorry to those who I missed here for questions/support.

Also I was not getting email...
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