Webra T4-40
08-03-2011, 04:33 AM
#26
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RE: Webra T4-40
The engine in post 22 has one way valves in the crankcase and it supercharges itself ala YS, my T4 .87 had plates in place of those valves. MotorBoy has a T4 .87 with the supercharger valves.
Last edited by Hobbsy; 12-21-2018 at 03:21 AM.
08-03-2011, 07:32 AM
#28
RE: Webra T4-40
ORIGINAL: Reginald
The first Webra T-4's did have the arrangement like the engine from my collection. Later a conversion set was available from Webra so you could put the carb in the head.
The first Webra T-4's did have the arrangement like the engine from my collection. Later a conversion set was available from Webra so you could put the carb in the head.
08-03-2011, 10:25 AM
#29
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RE: Webra T4-40
Forgot to mention, the engine on the left is the T4-80 of 1985 and on the right is the T4-40 of 1983.
The pics above are of the T4 14,314cc of 1980. The rotary valve was inspired on the Aspin principle. The fuel/air mixture goes through the crankcase.
The idea for this was to give some supercharging to the engine but that did'nt work out as expected so later engines got the carb directly into the head.
That HP VT-21 did have long vertical cooling fins and is pretty scarce to find today. Frankly, I do not have good memories of that big T4, flew it on a Telemaster.
Black goo coming out of the silencer. Very difficult to rebuild these T4's, by that I do mean the distance of the valve that is achieved with very thin shims and
on all the T4's Ive rebuilt these shims were badly worn to cigarette paper thickness.
The pics above are of the T4 14,314cc of 1980. The rotary valve was inspired on the Aspin principle. The fuel/air mixture goes through the crankcase.
The idea for this was to give some supercharging to the engine but that did'nt work out as expected so later engines got the carb directly into the head.
That HP VT-21 did have long vertical cooling fins and is pretty scarce to find today. Frankly, I do not have good memories of that big T4, flew it on a Telemaster.
Black goo coming out of the silencer. Very difficult to rebuild these T4's, by that I do mean the distance of the valve that is achieved with very thin shims and
on all the T4's Ive rebuilt these shims were badly worn to cigarette paper thickness.
ORIGINAL: earlwb
Nice pics of the T4 engines Reginald. I think you have the most ultimate collection of engines that I know that anyone has.
If I remember correctly, the T4-40 with the carb mounted directly on the head was for RC cars or trucks. Years ago, there was a push to get people to use 4 stroke engines in cars and trucks. For RC cars and trucks, OS marketed a .26, MECOA had a special VT-21 or 25, and Webra had the T4-40.
Nice pics of the T4 engines Reginald. I think you have the most ultimate collection of engines that I know that anyone has.
If I remember correctly, the T4-40 with the carb mounted directly on the head was for RC cars or trucks. Years ago, there was a push to get people to use 4 stroke engines in cars and trucks. For RC cars and trucks, OS marketed a .26, MECOA had a special VT-21 or 25, and Webra had the T4-40.
08-03-2011, 11:58 AM
#30
RE: Webra T4-40
ORIGINAL: Hobbsy
The engine in post 22 has one valves in the crankcase and it supercharges itself ala YS, my T4 .87 had plates in place of those valves. MotorBoy has a T4 .87 with the supercharger valves.
The engine in post 22 has one valves in the crankcase and it supercharges itself ala YS, my T4 .87 had plates in place of those valves. MotorBoy has a T4 .87 with the supercharger valves.
One disadvantage: The weight is about same as a OS FT 160 engine and not so powerful.
12-20-2018, 06:34 PM
#31
Nothing about the way it looks says it's not production.
Here's mine.
I found one more on google images. Webra-Motoren
Here's mine.
I found one more on google images. Webra-Motoren
the Webra 40 RC "Blackhead " 1022 since the mid 70s and have many of them. I only acquired these because I recently purchased a model transmission
that uses a T4-40 as it's power source. I found and purchased the 2 T4-40s as spares but was unaware that there were variations of the engine. Looking
into the drum valve of these it is easily seen that they are substantially different and it obviously isn't a matter of simply reversing intake and exhaust components....
As others said in this original thread finding information on these engines is sketchy. If there are other threads or other references I'd enjoy reading them so any assistance would be appreciated.
12-25-2018, 11:50 AM
#33
It is intended for a tank, 1/10 ( perhaps 1/8 as well) scale. I do not know who built this transmission. I have others of different types that use a Webra .40 RC
'Blackhead'. This is the first I've seen made to use a Webra T4 type. I've used OS and Saito 4 cycles in other models before.
You may refer to an earlier thread to see the use of the Webra Blackhead. http://www.rcuniverse.com/forum/glow-engines-114/884441-rings-webra-40-blackhead.html
Jerry
'Blackhead'. This is the first I've seen made to use a Webra T4 type. I've used OS and Saito 4 cycles in other models before.
You may refer to an earlier thread to see the use of the Webra Blackhead. http://www.rcuniverse.com/forum/glow-engines-114/884441-rings-webra-40-blackhead.html
Jerry
12-27-2018, 12:49 PM
#35
02-25-2021, 10:01 PM
#36
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FYI,
‘I came upon this thread trying to figure out which of my T-4 40’s to sell and which to keep. Both are new in box and have black belt covers. One in a red box, the other in an orange, and I remembered the main difference was that the intake and exhaust were switched on them.
Red box is part number 1044RC and says Webra T4/40
Orange box is part number 1043RC and says Webra T4/40 mit Heckvergasser
Translated is “with rear exhaust gasses”
‘I came upon this thread trying to figure out which of my T-4 40’s to sell and which to keep. Both are new in box and have black belt covers. One in a red box, the other in an orange, and I remembered the main difference was that the intake and exhaust were switched on them.
Red box is part number 1044RC and says Webra T4/40
Orange box is part number 1043RC and says Webra T4/40 mit Heckvergasser
Translated is “with rear exhaust gasses”
02-25-2021, 10:04 PM
#37
FYI,
‘I came upon this thread trying to figure out which of my T-4 40’s to sell and which to keep. Both are new in box and have black belt covers. One in a red box, the other in an orange, and I remembered the main difference was that the intake and exhaust were switched on them.
Red box is part number 1044RC and says Webra T4/40
Orange box is part number 1043RC and says Webra T4/40 mit Heckvergasser
Translated is “with rear exhaust gasses”
‘I came upon this thread trying to figure out which of my T-4 40’s to sell and which to keep. Both are new in box and have black belt covers. One in a red box, the other in an orange, and I remembered the main difference was that the intake and exhaust were switched on them.
Red box is part number 1044RC and says Webra T4/40
Orange box is part number 1043RC and says Webra T4/40 mit Heckvergasser
Translated is “with rear exhaust gasses”
I'll make it easy for you: Sell them both to me!!
Jerry
03-04-2021, 05:45 AM
#38
wevbra engie/ perry carb
Good day to all,
Please help me with this doubt I have
I have a webra engine and would like to restore for using it in an airplane, but tsome carb parts are missing, can I install a perry carburator whith out a pump?
will the perry carb work ?
many thanks
Please help me with this doubt I have
I have a webra engine and would like to restore for using it in an airplane, but tsome carb parts are missing, can I install a perry carburator whith out a pump?
will the perry carb work ?
many thanks
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wolfiberkleidz (03-08-2021)
